fixed single use download link

hyrax/app/controllers/single_use_links_viewer_controller.rb

+class SingleUseLinksViewerController < Hyrax::SingleUseLinksViewerController
+  include HyraxHelper
+
+  def download
+    presigned_url = s3_file_download_url_for_file_set(@asset.id)
+    send_data URI.open(presigned_url).read, filename: @asset.title[0]
+  end
+end
\ No newline at end of file

hyrax/config/routes.rb

@@ -21,6 +21,7 @@ Rails.application.routes.draw do
   end
 
   get 'dashboard/profiles/:id', :to => 'profiles#show'
+  get 'single_use_link/download/:id' => 'single_use_links_viewer#download', as: :download_single_use_link
 
   mount Hydra::RoleManagement::Engine => '/'